res_stasis.c: Added video_single option for bridge creation

Currently, it was not possible to create bridge with video_mode single.
This made hard to put the bridge in a vidoe_single mode.
So, added video_single option for Bridge creation using the ARI.
This allows create a bridge with video_mode single.

ASTERISK-29055

Change-Id: I43e720e5c83fc75fafe10fe22808ae7f055da2ae

main/bridge.c

@@ -3818,13 +3818,15 @@ void ast_bridge_set_single_src_video_mode(struct ast_bridge *bridge, struct ast_
 	ast_bridge_lock(bridge);
 	cleanup_video_mode(bridge);
 	bridge->softmix.video_mode.mode = AST_BRIDGE_VIDEO_MODE_SINGLE_SRC;
-	bridge->softmix.video_mode.mode_data.single_src_data.chan_vsrc = ast_channel_ref(video_src_chan);
-	ast_verb(5, "Video source in bridge '%s' (%s) is now '%s' (%s)\n",
-		bridge->name, bridge->uniqueid,
-		ast_channel_name(video_src_chan),
-		ast_channel_uniqueid(video_src_chan));
+	if (video_src_chan) {
+		bridge->softmix.video_mode.mode_data.single_src_data.chan_vsrc = ast_channel_ref(video_src_chan);
+		ast_verb(5, "Video source in bridge '%s' (%s) is now '%s' (%s)\n",
+			bridge->name, bridge->uniqueid,
+			ast_channel_name(video_src_chan),
+			ast_channel_uniqueid(video_src_chan));
+		ast_indicate(video_src_chan, AST_CONTROL_VIDUPDATE);
+	}
 	ast_bridge_publish_state(bridge);
-	ast_indicate(video_src_chan, AST_CONTROL_VIDUPDATE);
 	ast_bridge_unlock(bridge);
 }
 

res/ari/resource_bridges.h

@@ -52,7 +52,7 @@ struct ast_ari_bridges_list_args {
 void ast_ari_bridges_list(struct ast_variable *headers, struct ast_ari_bridges_list_args *args, struct ast_ari_response *response);
 /*! Argument struct for ast_ari_bridges_create() */
 struct ast_ari_bridges_create_args {
-	/*! Comma separated list of bridge type attributes (mixing, holding, dtmf_events, proxy_media, video_sfu). */
+	/*! Comma separated list of bridge type attributes (mixing, holding, dtmf_events, proxy_media, video_sfu, video_single). */
 	const char *type;
 	/*! Unique ID to give to the bridge being created. */
 	const char *bridge_id;
@@ -82,7 +82,7 @@ int ast_ari_bridges_create_parse_body(
 void ast_ari_bridges_create(struct ast_variable *headers, struct ast_ari_bridges_create_args *args, struct ast_ari_response *response);
 /*! Argument struct for ast_ari_bridges_create_with_id() */
 struct ast_ari_bridges_create_with_id_args {
-	/*! Comma separated list of bridge type attributes (mixing, holding, dtmf_events, proxy_media, video_sfu) to set. */
+	/*! Comma separated list of bridge type attributes (mixing, holding, dtmf_events, proxy_media, video_sfu, video_single) to set. */
 	const char *type;
 	/*! Unique ID to give to the bridge being created. */
 	const char *bridge_id;

res/res_stasis.c

@@ -792,6 +792,8 @@ static struct ast_bridge *bridge_create_common(const char *type, const char *nam
 			capabilities &= ~AST_BRIDGE_CAPABILITY_NATIVE;
 		} else if (!strcmp(requested_type, "video_sfu")) {
 			video_mode = AST_BRIDGE_VIDEO_MODE_SFU;
+		} else if (!strcmp(requested_type, "video_single")) {
+			video_mode = AST_BRIDGE_VIDEO_MODE_SINGLE_SRC;
 		}
 	}
 

res/stasis/stasis_bridge.c

@@ -313,6 +313,8 @@ struct ast_bridge *bridge_stasis_new(uint32_t capabilities, unsigned int flags,
 		 * this should rarely be changed but should become configurable in the future.
 		 */
 		ast_bridge_set_video_update_discard(bridge, 5);
+	} else if (video_mode == AST_BRIDGE_VIDEO_MODE_SINGLE_SRC) {
+		ast_bridge_set_single_src_video_mode(bridge, NULL);
 	} else {
 		ast_bridge_set_talker_src_video_mode(bridge);
 	}

rest-api/api-docs/bridges.json

@@ -30,7 +30,7 @@
 					"parameters": [
 						{
 							"name": "type",
-							"description": "Comma separated list of bridge type attributes (mixing, holding, dtmf_events, proxy_media, video_sfu).",
+							"description": "Comma separated list of bridge type attributes (mixing, holding, dtmf_events, proxy_media, video_sfu, video_single).",
 							"paramType": "query",
 							"required": false,
 							"allowMultiple": false,
@@ -69,7 +69,7 @@
 					"parameters": [
 						{
 							"name": "type",
-							"description": "Comma separated list of bridge type attributes (mixing, holding, dtmf_events, proxy_media, video_sfu) to set.",
+							"description": "Comma separated list of bridge type attributes (mixing, holding, dtmf_events, proxy_media, video_sfu, video_single) to set.",
 							"paramType": "query",
 							"required": false,
 							"allowMultiple": false,
@@ -755,7 +755,7 @@
 				},
 				"video_mode": {
 					"type": "string",
-					"description": "The video mode the bridge is using. One of 'none', 'talker', or 'single'.",
+					"description": "The video mode the bridge is using. One of 'none', 'talker', 'sfu', or 'single'.",
 					"required": false
 				},
 				"video_source_id": {